Width-Tuned Magnetic Order Oscillation on Zigzag Edges of Honeycomb Nanoribbons
- Nanjing University (China). National Laboratory of Solid State Microstructure, Department of Physics
- Nanjing University (China). National Laboratory of Solid State Microstructure, Department of Physics and Collaborative Innovation Center of Advanced Microstructures; Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Department
- Nanjing University (China). National Laboratory of Solid State Microstructure, Department of Physics and Collaborative Innovation Center of Advanced Microstructures
- Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Department
- Zhejiang Normal University (China). Center for Statistical and Theoretical Condensed Matter Physics; Nanjing University (China). National Laboratory of Solid State Microstructure, Department of Physics
Quantum confinement and interference often generate exotic properties in nanostructures. One recent highlight is the experimental indication of a magnetic phase transition in zigzag-edged graphene nanoribbons at the critical ribbon width of about 7 nm [Magda, G. Z. et al. Nature 2014, 514, 608]. Here in this work, we show theoretically that with further increase in the ribbon width, the magnetic correlation of the two edges can exhibit an intriguing oscillatory behavior between antiferromagnetic and ferromagnetic, driven by acquiring the positive coherence between the two edges to lower the free energy. The oscillation effect is readily tunable in applied magnetic fields. In conclusion, these novel properties suggest new experimental manifestation of the edge magnetic orders in graphene nanoribbons and enhance the hopes of graphene-like spintronic nanodevices functioning at room temperature.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 1376136
- Report Number(s):
- BNL--114073-2017-JA; KC0202030
- Journal Information:
- Nano Letters, Journal Name: Nano Letters Journal Issue: 7 Vol. 17; ISSN 1530-6984
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Spin states of zigzag-edged M?bius graphene nanoribbons from first principles
Spin splitting of dopant edge state in magnetic zigzag graphene nanoribbons